What is Indoor Outdoor Cable

Fiber optic cable that is capable of surviving the outdoor environment and meets the flammability requirements for use inside buildings offers many advantages to the end-user, as well as the installer and distributor. The use of only one type of cable between and within buildings can save many labor hours and reduce material costs by eliminating the need to splice outdoor cables to flame-retardant indoor cables.

Indoor outdoor cable assemblies are designed for general outdoor applications, yet they are riser rated and can be used indoors without the restrictions imposed upon loose tube cables, or non-UL approved cable. Indoor outdoor cable, is like many other terms in the wire and cable industry in that the definition depends on the specifics of the subject in question. In general, “indoor” implies that the cable has at minimum an NEC Fire Resistance Rating so that the cable is not subject to the typical 50-foot indoor length limitation that applies to outside plant (OSP) cables. “Outdoor” generally implies that the construction of the cable is such that it will withstand certain environmental extremes typically only experienced outdoors. Beyond that, the specifics of the design must be examined to determine the suitability of any cable for an application requiring indoor outdoor performance.

Indoor -outdoor Fiber Optic cables are designed to meet both the stringent environmental requirements typical of outside plant cable AND the flammability requirements of premise
applications. Ideal for applications that span indoor and outdoor environments, Indoor/outdoor cable can eliminate the need for building entryway splice points, saving both time and money.

Indoor/Outdoor cables combine the flame resistance and safety features of an indoor riser or plenum cable with the durability that is critical for OSP use. The result is a unique, dual-purpose cable that can save time and money by allowing OSP applications to flow seamlessly indoors, using a single cable and no splices.

When referencing unshielded twisted pair (UTP) cables, indoor/outdoor is a special designation of cable intended for limited indoor/outdoor use. This cable was designed for the purpose of connecting the Network Interface Device (NID) located on the outside of a building or residence to the inside services, which may be a small telecommunications closet or simply a wall outlet. This cable typically has a minimum NEC Fire Resistance Rating of CMX plus an additional UL rating of “Outdoor”. Other fire resistance ratings are available as applications warrant. The materials used in Indoor/Outdoor UTP cables provide better low temperature properties and UV protection than their strictly indoor counterparts.

Indoor/outdoor UTP cable is not intended for typical outdoor applications for which OSP cables are designed. As with most UTP cables, Indoor/Outdoor cables lack a grounding mechanism for handling the electrical surge that can occur from a lightning strike or contact with another power source. This is a safety issue and should not be taken lightly! The NEC and NESC both require that electrically exposed cable be enclosed in a metallic covering that is grounded at each end. They further require that any communication cable entering a building must have
the individual conductors terminated in a UL Listed Primary grounding device called a building entrance protector (BEP). This is a safety valve for those occasional instances where the
power surge actually makes its way past the shield or conduit and travels along the conductors. Secondary devices of the type used to protect electronic equipment inside a building are not suitable for BEP use and are not allowed by code.

FiberStore is one of the leading suppliers of fiber optic cable in the China stocking hundreds of thousands of feet of fiber optic cable that are ready to ship same day including all types of single mode fiber optic cable, multimode fiber optic cable, loose tube fiber optic cable, breakout fiber cable, mpo cable, hybrid cable and more.

Something About MPO MTP Fiber Cable

MPO/MTP stands for “Multiple-Fiber Push-On/Pull-off”. The purpose of MPO/MTP technology is that you can pull just one single cable with 8 (for example) fibers. So instead of patching 8 seperate fiber cables, you only need patch one cable with one connector. MPO/MTP Fiber Cable is used in various applications for all networking and device needs like 100 Gigabit modules.

MTP/MPO is usually used in ribbon fiber optic patch cords or ribbon fan out multi fiber assembiles. The ribbon fiber optic cables features multi fiberglass inside each single jacket, MTP/MPO is also multi fiberglass core inside each single connector. That is to say, there are several fiberglass connections in each single MTP/MPO fiber optic patch cord, for example, 4 fibers, 8 fibers, 12 fibers, etc. Typical MTP/MPO fiber optic patch cord assemblies like MTP/MPO to 8 LC, MTP/MPO to 12 MT-RJ, etc. MTP/MPO fiber optic patch cords are also available by single mode and multimode, like PC and APC Polish.

MTP fiber optic patch cable is with MTP fiber optic connectors which are upgrade version of the former MPO. MTP is with better mechanical and optic fiber performance compared with MPO. Both the MTP and MPO series cables are multi fiber connectors. There are many fiber optic channels in each single connector. Because of such multi fiber feature, these connectors need to use with multi fiber cables, especially the ribbon multi fiber optic cables.

MTP and MPO cable is available in female to female or a male to male and male to female configurations. The male version has MTP pins. These can be made with 12 fiber MTP connectors, 24 fibers MTP connectors, 48 fiber MTP connector variations. We use MTP fiber optic connectors for all of our MTP and MPO terminations so that the highest performance is accomplished. Many additional options and combinations are available. All multi fiber optic cables are customizable.

To have a better understanding of MTP, I will introduce you some MTP terminology as following:

About MTP Trunks

The MTP Trunk cable is designs for Data Center Applications. This cable is a round cable with the outer diameter of 3,0 mm or 4,5 mm (with two jackets on both sides).The connectors where this cable is terminated on is the so called MTP connector (female).

About MTP Fiber Optic Cassette
The MTP cassette is nothing more than a basic case which splits out MTP to SC/LC connectors, which is available for 12 SC/LC connectors and 24 connectors.

About MTP fanouts

MTP fanout cables are cables that are multiple cables that are bundeled within the same jacket.This is also often refered as a Breakout cable.

About Direct Splits (MTP to LC or MTP to SC cables)

MTP Direct Split cables are cables with the fanout made directly in the MTP connector. These are designed for high density Data Center applications to plug into MTP casettes and/or MTP patch panels.

FiberStore provides many fiber optic products such as fiber patch cables, hybrid cableloose tube cable, outdoor fiber optic cable and more. MPO/MTP fiber patch cables are available in UPC and APC finishes, and support both multimode and single mode applications. These fiber cables are tested with guaranteed quality, and they can be installed easily, which saves time and money.

How To Choose The Fiber Optic Cable

Choosing a fiber optic cable (click here to know optical cable price)for any given application requires considering installation and environmental requirements plus long-term fiber requirements to cover expansion to newer communications networks. Installation requirements include where and how the cable will be installed, such as pulled in conduit outdoors or placed in cable trays in a building. Long term requirements need to consider moisture or water exposure, expected temperature range, tension (aerial cables), or other environmental factors.

You should contact several cable manufacturers and give them detailed specifications for the installation. They will want to know where the cable is going to be installed, how many fibers you
need and what kind of fibers (singlemode, multimode or both in what we call hybrid cable.) You can also have a “composite” cable that includes copper conductors for signals or power. The cable companies will evaluate your requirements and make suggestions. Then you can get competitive bids.
Since the plan will call for a certain number of fibers, consider adding spare fibers to the cable fibers are cheap compared to the cost of installing additional cables. Then you won’t be in trouble if you break a fiber or two when splicing, breaking-out or terminating fibers. And consider future expansion needs. Most users install many more fibers than needed, especially adding singlemode fiber to multimode fiber cables for campus or premises backbone applications.

Underground cables are generally installed in conduit which is usually a 4 inch conduit with several innerducts for pulling cables. Here cables are designed for high pulling tension and lubricants are used to reduce friction on longer pulls. Automated pulling equipment that limits pulling tension protects the cables. Very long runs or those with more bends in the conduit may need intermediate pulls where cable is pulled, figure-8ed and then pulled to the next stage or intermediate pulling equipment is used. Splices on underground cables are generally stored above ground in a pedestal or in a vault underground. Sufficient excess cable is needed to allow splicing in a controlled environment, usually a splicing trailer, and the storage of excess cable must be considered in the planning stage.

Direct buried cable is placed underground without conduit. Here the cable must be designed to withstand the rigors of being buried in dirt, so it is generally a more rugged cable, armored to
prevent harm from rodent chewing or the pressures of dirt and rocks in which it is buried. Direct burial is generally limited to areas where the ground is mostly soil with few rocks down to the depth required so trenching or plowing in cable is easily accomplished. Splices on direct buried cables can be stored above ground in a pedestal or buried underground. Sufficient excess cable is needed to allow splicing in a controlled environment, usually a splicing trailer, and the storage of excess cable must be considered.

Aerial installations go from pole to pole, but the method of securing cables can vary depending on the situation. Some cables are lashed to messengers or other cables, such as CATV where light fiber cables are often lashed to the heavy coax already in place. Cables are available in a “8” configuration with an attached steel messenger that provides the strength to withstand tension on the cable. Some cables are made to directly be supported without a messenger, called all-dielectric sefl-supporting cables that use special hardware on poles to hold the cables.

Optical ground wire is used by utilities for high voltage distribution lines. This cable is an electrical cable with fibers in the middle in a hermetically-sealed metal tube. It is installed just like standard electrical conductors. Splices on aerial cables can be supported on the cables or placed on poles or towers, Most splices are done on the ground, although it is sometimes done in a bucket or even on a tent supported on the pole or tower. Hardware is available for coiling and storing excess cable.

Choosing a singlemode fiber is easy, with basic 1300 nm singlemode (called G.652 fiber) adequate for all but the longest links or those using wavelength-division multiplexing. Those may need special fiber optimized at 1500-1600 nm (G.653 or G.654). For premises and campus cable plants, OM3 type laser-optimized 50/125 multimode fiber is probably the best choice for any multimode OSP runs, as its lower attenuation and higher bandwidth will make most networks work better.

Including more fibers in a cable will not increase the cable cost proportionally; the basic cost of making a cable is fixed but adding fibers will not increase the cost much at all. Choosing a standard design will help reduce costs too, as manufacturers may have the cable in stock or be able to make your cable at the same time as others of similar design. The only real cost for adding more fibers is additional splicing and termination costs, still small with respect to total installed cost. And remember that having additional fibers for future expansion, backup systems or in case of breaks involving individual fibers can save many future headaches.

Common traits of all outside plant cables include strength and water or moisture protection. The necessary strength of the cable will depend on the installation method. All cables installed outdoors must be rated for moisture and water resistance. Until recently, most people chose a gel-filled cable (or also outdoor cable), but now dry-water blocked cables are widely available and preferred by many users.

These cables use water-absorbing tape and power that expands and seals the cable if any water enters the cable. Installers especially prefer the dry cables as it does not require the messy, tedious removal of the gel used in many cables, greatly reducing cable preparation for splicing or termination.

OSP cable construction types are specifically designed for strength depending on where they are to be direct buried, buried in conduit, placed underwater or run aerially on poles. The proper type must be chosen for the cable runs. Some applications may even use several types of cable. Having good construction plans will help in working with cable manufacturers to find the appropriate cable types and ordering sufficient quantities. One must always order more cable than route lengths, to allow for service loops, preparation for termination and excess to save for possible restoration needs in the future.

Like cable types, cable plant hardware types are quite diverse and should be chosen to match the application type and cable types being used. With so many choices in hardware, working with cable manufacturers is the most expeditious way to chose hardware and ensure compatibility. Besides cable compatibility, the hardware must be appropriate for the location, which can be outdoors, hung on poles, buried, underwater, inside pedestals, vaults or buildings, etc. Sometimes the hardware will need to be compatible with local zoning, for example in subdivisions or business parks. The time consumed in choosing this hardware can be lengthy, but is very important for the long term reliability of the cable plant.

If you would like to purchase our optical fiber cable or want to know more about our fibre optic cable specification, please visit our website or call us Tel: +86 (755) 8300-3611.

Introducing Two Basic Cable Design

There are two basic cable design, loose tube cable and tight buffered cable. Loose-tube cable, used in the majority of outside-plant installations in North America, and tight-buffered cable, primarily used inside buildings.

The modular design of loose-tube cables typically holds up to 12 fibers per buffer tube with a maximum per cable fiber count of more than 200 fibers. Loose-tube cables can be all-dielectric or optionally armored. The modular buffer-tube design permits easy drop-off of groups of fibers at intermediate points, without interfering with other protected buffer tubes being routed to other locations. The loose-tube design also helps in the identification and administration of fibers in the system.

Single-fiber tight-buffered cables are used ase pigtails, patch cords and jumpers to terminate loose-tube cables directly into opto-electronic transmitters, receivers and other active and passive components.

Multi-fiber tight-buffered cables also are available and are used primarily for alternative routing and handling flexibility and ease within buildings.

Loose Tube Cable

In a loose-tube cable design, color-coded plastic buffer tubes house and protect optical fibers. A gel filling compound impedes water penetration. Excess fiber length (relative to buffer tube length) insulates fibers from stresses of installation and environmental loading. Buffer tubes are stranded around a dielectric or steel central member, which serves as an anti-buckling element.

The cable core, typically surrounded by aramid yarn, is the primary tensile strength member. The outer polyethylene jacket is extruded over the core. If armoring is required, a corrugated steel tape is formed around a single jacketed cable with an additional jacket extruded over the armor.

Loose-tube cables typically are used for outside-plant installation in aerial, duct and direct-buried applications.

Tight-Buffered Cable

With tight-buffered cable designs, the buffering material is in direct contat with the fiber. This design is suited for “jumper cables” which connect outside plant cables to terminal equipment, and also for linking various devices in a premises network.

Multi-fiber, tight-buffered cables often are used for intra-building, risers, general building and plenum applications.

The tight-buffered design provides a rugged cable structure to protect individual fibers during handling, routing and connectorization. Yarn strength members keep the tensile load away from the fiber.

As with loose-tube cables, optical specifications for tight-buffered cables also should include the maximum performance of all fibers over the operating temperature range and life of the cable. Averages should not be acceptable.

If you’d like to purchase or learn more about our loose tube cable, breakout fiber cable or hybrid cable, simply visit our offical website or call our customer service.

The Commonly Available Optical Fiber Cable Types

As uses for optical fiber have become more varied, manufacturers have begun producing, cables to meet specific needs. Cable configurations vary based on the type of use, the location, and future expansion needs, and it is likely that more will be created as future applications emerge.

Bear in mind that different cable arrangements are variations on a theme. Different combinations of buffer type, strength members, and jackets can be used to create cables to meet the needs of a wide variety of industries and users.

Let’s look at some of the commonly available optical fiber cables.

Breakout Cable

Breakout cables are used to carry optical fibers that will have direct termination to the equipment, rather than being connected to a patch panel. Breakout fiber cable consist of two or more simplex cables bundled with a strength member and central member covered with an outer jacket. These cables are ideal for routing in exposed trays or any application requiring an extra rugged cable that can be directly connected to the equipment.

Distribution cable

When it is necessary to run a large number of optical fibers through a building, distribution cable is often used. Distribution cable consists of multiple tight-buffered fibers bundled in a jacket with a strength member. These cables may also feature a dielectric central member to increase tensile strength, resist bending, and prevent the cable from being kinked during installation.

Distribution cables are ideal for inter-building routing. Depending on the jacket type they may be routed through plenum areas or riser shafts to telecommunications rooms, wiring closets, and workstations. The tight-buffered optical fibers are not meant to be handled muchbeyond the initial installation, because they do not have a strength member and jacket. Distribution cables may carry up to 144 individual tight-buffered optical fibers, many of which may not be used immediately but allow for future expansion.

Ribbon Cable

Ribbon cable is a convenient solution for space and weight problems. The cable contains fiber ribbons, which are actually coated optical fibers placed side by side, encapsulated in Mylar tape similar to a miniature version of wire ribbons used in computer wiring. A single ribbon may contain 4, 8, or 12 optical fibers. These ribbons can be stacked up to 22 high.

Because the ribbon contains only coated optical fibers, this type of cable takes up much less space than individually buffered optical fibers. As a result, ribbon cables are denser than anyother cable design. They are ideal for applications where limited space is available, such as in an existing conduit that has very little room left for an additional cable.

Ribbon cables come in two basic arrangements. In the loose tube ribbon cable, fiber ribbons are stacked on top of one another inside a loose-buffered tube. This type of arrangement can hold several hundred fibers in close quarters. The buffer, strength members,and cable jacket carry any strain while the fiber ribbons move freely inside the buffer tube.

The jacketed ribbon cable looks like a regular tight-buffered cable, but it is elongated to contain a fiber ribbon. This type of cable typically features a small amount of strength member and aripcord to tear through the jacket.

While ribbon fiber provides definite size and weight savings, it does require special equipment and training to take advantage of those benefits. Connectors, strippers, cleavers, and fusion splicers must all be tailored to the ribbon fiber. For these reasons, ribbon fiber may not be the best solution in all situations.

Armored Cable

Armored cable can be used for indoor applications and outdoor applications. An armored cable typically has two jackets. The inner jacket is surrounded by the armor and the outer jacket or sheath surrounds the armor.

An armored cable used for outdoor applications is typically a loose tube fiber construction designed for direct burial applications. The armor is typically a corrugated steel tape surrounded by an outer polyethylene jacket. This combination of outer jacket and armor protects the optical fibers from gnawing animals and the damage that can occur during direct burial installations.

Armored cable used for indoor applications may feature tight-buffered or loose-buffered optical fibers, strength members, and an inner jacket. The inner jacket is typically surrounded by a spirally wrapped interlocking metal tape armor. This type of armor is rugged and provides crush resistance. These cables are used in heavy traffic areas and installations that require extra protection, including protection from rodents.

Hybrid Cable

Hybrid cable, as applied to fiber optics, combines multimode and single-mode optical fibers in one cable. Hybrid cable should not be confused with composite cable, although the terms have been used interchangeably in the past.

Composite Cable

Composite Cable, as defined by the National Electrical Code (NEC), is designed to carry both optical fiber and current carrying electrical conductors in the same run. This composite cable consists of optical fibers along with twisted-pair wiring typical of telephone wiring. This arrangement is convenient for networks that carry fiber optic data and conventional telephone wiring to the same user. Composite cable also provides installers with a way to communicate during fiber installation and provides electrical power to remote equipment, such as repeaters, along the fiber’s route.

Simplex Cordage

Simplex cordage, consists of a single optical fiber with a tight buffer, an aramid yarn strength member, and a jacket. Simplex cordage gets its name from the fact that, because it is a single fiber, it is typicalyy used for one-way, or simplex, transmission, although bidirectional communications are possible using a single fiber.

Duplex Cordage

Duplex cordage, also known as zipcord, is similar in appearance to household electrical cords. Duplex cordage is a convenient way to combine two simplex cords to achieve duplex, or two-way, transmissions without individual cords getting tangled or switched around accidentally.

Why Fiber Optic Cable More Popular Than Copper Cable?

Today fibre optic cables are used the world over for communications. The improvement in communication is brought by the development in fiber optic cables. Why fiber optic cable more popular than copper cable?

Fiber optic cable is a kind of cable which has more than one fiber optic. These kinds of cables are widely used and are also considered as one of the best options for a lot of people. There are a lot of advantages that one can be able to get when using this type of cable.

One of the advantages is that these cables are lighter, flexible and less bulky as compared to other kind of cables. They are widely used in urban areas where there is a shortage of space such as sewer lines, subways and power lines as well. Since this cable is lighter, it can easily fit in small and crowded placed. Optical cables are also easy to transport in various installation location. There is no doubt that flexibility is an advantage since it can be easily fitted in every corner.

Moreover, fiber optic cable cost is low. You can be able to save a lot on your budget when you replace your old copper wirings with optical fiber cable. As compared to copper wires, it also has a higher carrying capacity. This means that you will be able to have transmissions of many signals at a time without experiencing a lot of intrusion.

There are four advantages of fiber optic cabling, these advantages explain why fiber is becoming the preferred network cabling medium for high bandwidth, long-distance applications:

1. Immunity to Electromagnetic Interference (EMI)

All copper cable network media sharing a common problem: they are susceptible to electromagnetic interference (EMI), fiber optic cabling is immune to crosstalk because optical fiber does not conduct electricity and uses light signals in a glass fiber, rather than electrical signals along a metallic conductor to transmit data. So it cannot produce a magnetic field and thus is immune to EMI.

2. Higher Possible Data Rates

Because light is immune to interference, can be modulated at very high frequencies, and travels almost instantaneously to its destination, much higher data rates are possible with fiber optic
cabling technologies than with traditional copper systems. Data rates far exceeding the gigabit per second (Gbps) range and higher are possible, and the latest IEEE standards body is working on 100Gbps fiber based applications over much longer distances than copper cabling. Multimode is preferred fiber optic type for 100-550 meters seen in LAN network, and since single mode fiber optic cables are capable of transmitting at these multi-gigabit data rates over very long distances, they are the preferred media for transcontinental and oceanic applications.

3. Longer Maximum Distances

Typical copper media data transmission by the distance limits the maximum length of less than 100 meters. Because they do not suffer from the electromagnetic interference problems of traditional copper cabling and because they do not use electrical signals that can dramatically reduce the long distance, single-mode fiber optic cables can span 75 kilometers (about 46.6 miles) without using signal-boosting repeaters.

4. Better Security

The Copper cable transmission media is susceptible to eavesdropping through taps. A tap (short for wiretap) is a device that punctures through the outer jacket of a copper cable and touches the inner conductor. The tap intercepts signals sent on a LAN and sends them to another (unwanted) location. Electromagnetic (EM) taps are similar devices, but rather than puncturing the cable,they use the cable’s magnetic fields, which are similar to the pattern of electrical signals. Because fiber optic cabling uses light instead of electrical signals, it is immune to most types of eavesdropping. Traditional taps won’t work because any intrusion on the cable will cause the light to be blocked and the connection simply won’t function. EM taps won’t work because no magnetic field is generated. Because of its immunity to traditional eavesdropping tactics, fiber optic cabling is used in networks that must remain secure, such as government and research networks.

If you are looking for high quality communication solution, FiberStore’s fiber optic cable is the best choice. FiberStore provides a wide range of quality optical fiber cables, such as indoor
outdoor cable, loose tube cable, breakout cable fiber, Hybrid cable and so on. Our fiber optic cable specification is very detail and very convenient for you selecting. The optical cable price on the website is per meter price. The more, the cheaper. Customers can also have the flexibility to custom the cable plant to best fit their needs. Only fiber cable that meets or exceeds industry standards is used to ensure quality products with best-in-class performance.